Answer:
75 general
105 student ID
Step-by-step explanation:
(it's a system)
4x+3y=615
x+y=180
(system as well)
4x+3y=615
x=180-y
4(180-y)+3y=615
720-4y+3y=615
-y=-105
y=105
x+105=180
x=180-105
x=75
Multiply 20/5 by nine so 20/5 simplify into 4 4 times nine is 36, so only 36 kids liked the book
For this case we have that according to the order of algebraic operations PEMDAS, the multiplications have priority over the addition and subtraction, then, we have the following expression:

Thus, the value of the expression is 1000.
Answer:

Answer:
1000
Step-by-step explanation:
100 times 10 = 1000
given: s is the midpoint of rt
definition of midpoint: rs st
given: st xy
transitive property of congruence: rs xy